Troubleshooting Pacemaker Behavior: Consequence of Prolonged Ventriculoatrial Conduction
نویسندگان
چکیده
منابع مشابه
Alternate ventriculoatrial Wenckebach conduction.
Three cases are presented showing retrograde alternate Wenckebach periods. Retrograde alternate Wenckebach periods were defined as 2:1 ventriculoatrial (VA) block in which the conducted beats showed progressive prolongation of conduction (VA) time. The sequence terminates with two or three successively blocked ventricular beats. In one of the three cases the level of block was identified as bei...
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Temporary transvenous pacemakers were inserted in ten patients with acute myocardial infarction complicated by atrioventricubu (A-V) block. With return of sinus rhythm, the ventricular rate was intentionally increased above sinus rate by graded increases of the pacemaker rate and stimulus amplitude to a maximum of 120 beats/minute and to 12 milliamperes for each paced rate. Four patients had ve...
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Prolonged (greater than 152 msec) calculated sinoatrial conduction times (SACT) were found in 24 of 470 patients studied by the atrial extrastimulus technique, ranging from 155 to 220 msec (180+/-4.4; mean+/-SEM). There were 18 males and six females with ages of 29 to 85 (mean 65+/-2.6). Electrocardiographic monitoring revealed significant sinus or atrial dysrhythmias in 19 (79%) patients. Of t...
متن کاملVentriculoatrial conduction metrics for classification of ventricular tachycardia with 1:1 retrograde conduction in dual-chamber sensing implantable cardioverter defibrillators.
The introduction of dual-chamber sensing in implantable cardioverter defibrillators (ICDs) has greatly reduced the incidence of false detection due to supraventricular tachycardias. The remaining arrhythmias which serve to confound classification are supraventricular tachycardias (SVTs) with 1:1 anterograde conduction and ventricular tachycardias (VT) with 1:1 retrograde conduction. An algorith...
متن کاملClinical and Electrophysiological Predictors of Ventriculoatrial Conduction in Patients under Evaluation for Ventricular Tachyarrhythmia
BACKGROUND Ventriculoatrial (VA) conduction has an important role in the initiation and maintenance of some arrhythmias. The aim of this study was to evaluate whether clinical and electrophysiological parameters of atrioventricular (AV) conduction can predict VA conduction. METHODS Detailed demographic, electrocardiographic, and echocardiographic data were recorded in 54 consecutive patients ...
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ژورنال
عنوان ژورنال: Journal of Innovations in Cardiac Rhythm Management
سال: 2020
ISSN: 2156-3977,2156-3993
DOI: 10.19102/icrm.2020.110905